Pump.



E1KOTTUSCH.

PUMP.

APPL ICATION FILED DEC. H. [914.

Patented June 13, 1916.

2 SHEETS-SHEET I.

E. KOTTUSCH.

PUMP,

APPLICATION FILED DEC.ii.,I914. I 1,186,664. v I Pate11tedJune13,1916

2 SHEETS-SHEET 2.

I UNITED STATES PATENT OFFICE. rmlnito'rruscn, oromcaeo, ILLINOIS, ASSIGNOR, BY iyrnsuu ASSIGNMENTS, TO

GUs'rayE nnnws AND WILLIAM 0. Laur e, BOTH or CHICAGO, ILLINOIS.

PUMP.

- i To all whom it may concern Be it known that I, Emn Ko'r'rUsoH, a

subject of the Emperor of Germany, residing at Chicago, in the county of Cook and State of Illinois, have invented'certain new and useful Improvements in Pumps, of which the following is a specification.

This invention relates to pumps of the type particularly designed for the inflating of pneumatic tires with pure, unsullied air, wherein the lubricating oil used for the moving parts of the pump is isolated from a the air chamber, so that the air discharged by the pump is cool and free from oil, which is particularly damaging to tires.

. further object of the present invention is to centralize the air intake and outlet valvesso that a ready concentration of the 1 air and the proper circulation thereof may ings, wherein:

present invention, parts thereof being shown finflating of pneumatic tires for motorin dotted lines 'to illustrate the movement thereof; Fig. 2 isahorizontal section along line 22 of Fig. 1 yFig. 3 is an elevation of the pump taken from the left of Fig. 2, to illustrate the driving clutch thereof; Fig. 4 is a vertical section taken at right angles to Fig. 1, along the line H of Fig. .1; and

Fig. 5 is a horizontalsection taken along line 5-5 of- Fig. 4.,

While the present invention may be used for pumping airand other fluids for general purposes, it is particularly designed for the driven vehicles, whereby the pump will receive its power from the crank shaft or other source, of the engine or motor of the vehicle, it being particularly desirable while using the pump for, tire inflation or, in fact for any other purpose, to have the moving parts thereof operate very rapidly, and for this reason the pump is usually connected directly to the crank shaft of the engine, though this is not necessary. Furthermore, in the inflation of pneumatic tires embodying rubber, oil causes the rubber to rot or decay, and, this being so, it is essenti that Specification of Letters Patent.

the accompanying draw- Patented. June 13, 1916.

- Application filed December 11, 1914. Serial No. 876,616.

all of the lubricating oils be isolated and removed from the air chamber.

Reference being had more particularly to said cylinder being provided with diametric convexed portions 12 in its wall, by means cf which the necessary rotation of the driving elements may be had, as will hereinafter be seen. Adjacent to the lower terminal of this cylinder, the wall thereof is provlded with the diametrically-disposed bearings 13 in which rotates the drive shaft 1 1 r of the pump. This drive shaft projects at one end beyondits bearings, and at that projecting end is provided with a key 15, upon which ismounted a clutch member 16, said clutch member being reciproca'ble upon the shaft and adapted to rotate therewith. While the source of power for rotating the shaft 14 is not disclosed in the drawings, the pump may be located adjacent to the engine of the car, and the. crank shaft of said engine may be provided with a clutch similar to the clutch member 16, so that the member 16 may be'reciprocatedto interlock with the clutch member on the crank shaft"; of the engine, thereby causing the shaft, 14 to be rotated synchronously with the engine movements. In order to impart the necessary movement to the clutch 16 and retain such clutch member in its adjusted position, the same is circumferentially grooved as at 17 and embraced by a yoke 18, which is provided with inwardly extending lugs 19 at the terminal of each arm, which are received in the grooves 17 This yoke 18 has an arm 20 secured thereto which, at its upper end, is'bifurcated to embrace (the projection 21 upon the cylinder 11, to

which projection the arm 20 is pivoted. By

oscillating the arm 20 and consequently the yoke 18,. the clutch 16 may be adjusted upon the shaft 14, and, to hold the clutch member and consequentlythe yoke 18 and arm 20 in their adjusted positions, a spring 22 is secured to the body of the cylinder and operates under the armQO, said spring being notched or bent at its free terminal, illustrated' in Fig. i, to engage the terminal of the arm 20 and hold these elements in their a (.ljusted'positions. The terminal of the arm 20, which is bifurcated, has secured to each arm of the bifurcation an arm 23, which ter '28, the utility of which will be hereinafter apparent. A cover plate 29 rests flush upon the top plate 26 and is secured to the casing pression 28 in the top plate, forming a com pletely inclosed air intake'chamber, as will 20' i be apparent.

As has heretofore been stated, the casing 25 incloses the air chamber, and, inasmuch as the cylinder 11 incloses the working parts of the pump and, therefore, operates in oil, it is essential to isolate the cylinder 11 from the interior of the casing 2-5 and for this purpose a partition plate 30 is mounted on the shoulder between the cylinder. 11 and'tlfl casing 25,said plate having a rubber washer 31. inlaid therein which rests upon the shoulf der above referred to. This partition plate is held in place by the bolts 32, which pierce both the shoulder between the casing 25 and cylinder 11 and the partition plate 30. Registering air intake. openings 33 pierce the shoulder between the casing 25 and cylinder 11 and the plate 30, so that the air or other. fluid may pass from the exterior of the pump to the air chamber inclosed in the casing 25. Other air intakes 34 are provided adjacent to the upper end of'the casing 25, and, in combination with the air intakes 33, consti-. tute the means for obtaining the air'supply for the chamber of the casing 25. A or bushi g 35 is concentrically formed upon the part tion plate 30 and projects into the cylinder1l and forms the bearing for What ordinariz 'would be the piston rod of the pump, which, in the present, instance, merely constitutes 'a plunger, as will hereinafter be seen. Mounted for reciprocation 1 through the hearing or bushing 35 is an interiorly {threaded sleeve 36, which at its upper end is provided with a transverse concentric plate 37, said plate 37 being located Within the casing 35, while the sleeve is, under normal con itions, located within the cylinder 11. An eccentric or cam 38 is keyed to the shaft 14 and is arranged to rotate therewith for the purpose of reciprocating the sleeve 35. This eccentric 38 contacts with a roller 39 mounted in a bracket 40.

' A"'shank 41, exteriorly threaded at its extreriie free terminal, is concentrically secured to the bracket 40 and at its base isen- I rectly, with the air in the casing 25.

bearing circled by a cup 42, in which lowergterminal is a helical coil spring 43, which endircles the bushing or hearing 35 -and the dleeve 36. The upper end of this spring 43 bears against the partition plate 30 adjacent to the bushihg or bearing '35. The shank 41 of the bracket 40 is threaded into the sleeve 36,.so that the sleeve, bracket 40, and roller 39 opcrate as a unit, which unit is held in contact with the cam or eccentrit; 38 by. means of the spring 43. Thus, upon the rotation of the shaft 14, the cam'38 by its contact with the ffoller bearing 39 imparts a reciprocatory lh'ovement to the sleeve 36, and, consequently, a

to theplate 37 in the casing 25, I an M The lower end of the cylinder surrounding the-roller bearing 39, the bearings 13, and the shaft 14, contains lubricating oiL, For the purp'ose'of supplying this portion of the cylinder with lubricating oil, a valve and supply .tap 44 is provided in the cylinder 11, directly above one of the bearings 13, so that, as the cam or eccentric 38 rotates in v the lower end of the cylinder 11 and the' I convex portions 12 thereof, the entire cylinder, the interior of the cylinder, and the working parts therein, are lubricated by what is commonly known as the splash system. It is, therefore, apparent that unless: the casing 25 is isolated from the cylinder 11, this splash system would entirely saturate the air within the casing 25 with oil, whereas, by theprovision of the partition plate 30,

no oil comes in contact, directly or indi- I The depression 28 of the top plate is provided with a central interiorly threaded 'ori-- fic'e into which the plug 45 is threaded, said plug being provided with a shoulder and l extending through the central aperture in 106 the cover plate; 29 The lower end. of the plug 45 is provided with a shouldered lip 46, which. registers and coiiperates with'ja groove formed concentrically on the inner face of the depression of the top plate 29 110 adjacent to the orifice into which the plug 45 is threaded. Between the shouldered lip 46 and the groove inflthe depression 28 is held a gubber or other elastic diaphragm 47, said diaphragm encircling the lower termin'al of the plug 45.abov e the shouldered lip 46, and clamped betw een the shouldered lip 46 and the top inner surface of the depression 28 of the top plate, when the plug 45 is threaded into its normal position. A

similar diaphragm 48 is secured in a central depression formed inthe plate 37 by means of a bolt 49 threaded into the upper termithe two diaphragms 47 and 48 are rigidly the secured hermetically to the sleeve 36 a plate 37 and to the plug 45, respectively,

the intake and the exhaust; are centralized atone point. For this purpose,'an exte-' Qthen converg central exhau' valve 56 upw proximity, theperiphery of the lower diaphragm 4S resting upon a shoulder of the interiorly threadedtring 51, while the periphery of the upper diaphragm ,4? is clamped upon the periphery of the lower dia- I phragm 4:8 by means of a clamping ring 52 101. a 52 operate as a unitand the inner surfaces threaded into the ring 51. The rings 51- and i i of each, viz., the surfacesoperating against Y the per pheries of the (haphragnis A7 and -18, are irregular, so that in clamping the said peripheries of the diaphragms together, an air-tight and hermetically sealed 01nt 13 produced. his manifest, from the foregofling, that as the sleeve 36 reciprocates in the manner p heretofore described, the diaphragms 47 and 48am brought together and a separated, creating a fanning action in the casing and creating an alternate compresning action caused by the movement of the diaphragms 47 and 48 causes air to flow into i the casing 25 through ,the air intakes 33 and 34.

When the sleeve 36 moves uplwardly, the plate 37 contacts against the so diaphragm 48, while the upper diaphragm 47 contacts with the depression 28 of the top if plate 26. This braces the diaphragm and prevents damage when a compression is created in the chamber -A,- which is when the'sleeve 36, the plate 37, and diaphragm a 48move upwardly; when a reversed motion is imparted to these elements, a suction is created in the chamber A.

T 'eplug contains the air intake for the chamber A and'the air exhaust, so that both riorly threaded exhaust union 53 is secured to the outer terminal of the plug 45 by means of a projection'54 threaded into an interiorly threaded passage 55 in the outer end of the plug45; A spring-actuated ball valve 56 operates in the passage 55, and normally tends to close the'central exhaust passage 57 of the plug, which latter, in turn, connects with the divergent exhaust or outss terminaltdf the plug 45, adjacent to the shoulderectlip 46 thereof. \Vhen a compression istcreated inthe chamber A by the upward nidvement of'the lip 46, plate 47 and diaphragm 48, the air contained in this f union 53,

a chamber A pissesthrough the'divergent, or t, exhaustpassages 58 to the passage 57,,forcing the ball ly againsttheaction of its spring 56 and'F-gpermitting the air to pass through the pasi sage 59 of the exhaust nals with the chamber A at approximately The chamber B located between-the cover plate 29 and the depression 28 of the top plate, constitutes an intermediate air reservoir into which the air is drawn thr ugh the passages 60 from the casing 25 after-the air enters said casing through the passages 33 and 34. From this intermediate air reservoir B the air is drawn into the chamher A when a suction is created therein, 'viz.,'when the sleeve 36, plate 37, and the 7 lower diaphragm 48' move downwardly througl the convergent intake passages -61,

v which hommunicate at their upper terminals with chamber B and at their lower termiso the center of the plug 45 where a concentric valve seat 62 is provided. The plate valve 63 is mounted in this valve seat 62'and is held in place by a retractile spring in the chamber A as heretofore described, this suction in combination with the pressure in-the intermediate reservoir B forces the plate valve 63 from its seat 62 and permits air to enter the chamber A through the passages 61. And when a compression is created in the chamber A as heretofore described, this pressure :closes the valve 63 and forces the air out through the passages 58,

and 59. Q i From the foregoing it is apparent that air drawn into the casing- 25, then into the intermediate reservoir B and later drawn into the chamber A and exhausted therefrom under pressure,'is entirely free from dust and dirt, and, owing to the quick action of 100 the parts, is forced from the pump at practically a continuousflow. By having the diaphragmsli. and 48 reinforced, and the iptake and exhaust centralized, greater efiiiciencyi is produced and the cleanliness and coolness ofthe; air is insured, as distinguished from thepump. of the'piston type whereby the air ejected therefrom receives not only the heat of the friction but also is saturated With Oil.

I claim" as my invention: r

1. In an air pump, a'cyli'nder, a plunger adaptedto'reciprocate ,in said cylinder, ec-, centric mechanism in said cylinder for reciprocating said plunger, an air chamber above-said cylinder, a compression and Sue tion diaphragm in said chamber, operatively mounted on the plunger, a separating partitidn between the cylinder and air chamber hating "a slideway through which the plunger passes, and valve mechanism attached'to tlie top .of the diaphragm, opposite the point of attachment-of the plunger.

2. Inanair pump, a 'cylinder, a plunger adapted to reciprocate in said cylinder,*an 13L;

' take and exhaust valve mechanism which is take mecha-nis'm located in the said plate and operatively connected to the upper por .tion ofthediaphragm above the plunger.

v flexible diaphragm inclosing a chamber 4. In an air pump, the combination ,with a cyllnder, of an air casing having intake passages,said air casing being isolated from the cylinder aforesaid, an intermediate air reservoir located in said air casing having direct connections with the air casing aforesaid, a diaphragm mounted in said-casing and arranged to alternately create a suction' and compression within itself, and a centralized discharge and intake for' said diaphragm.

5. In an air pump, the combination with a cylinder, of an air casing having intake passages, said air casing being isolated from the cylinder aforesaid, an intermediate air reservoir located in salcl air caslng having, direct connectlons with the air caslng aforesaid, a diaphragm mounted n said casmg' and arranged to alternately create a suction and compression ,within itself, a centralized discharge for said diaphragm, said dis-.

charge passing through the intermediate air reservoir aforesaid, and an intake adjacent to said discharge connecting the interior of said diaphragm with the intermediate air reservoir.

6. The combination with a casing, of a mounted in said casing, an air reservoir located within said casing and connected therewith, and a plug extending through said air reservoir provided with anexhaust' passage connecting with the interior of ,the diaphragm, and intake passages connecting the air reservoir with/the interior'of the diaphragm.

7. The combination with a casing, of a flexible 1diaphrag'm inclosmg a chamber mounted in said casing, an air reservoir 10- cated within said casing and connecte therewith, a top. plate on said casing, and" a plug mounted on said plate and extenda' ing through said air reservoir provided with an exhaust passage connecting with the interior of the diaphragm, and intake passages provided with a common automatically-operable valve for connecting the air reservoir with the interior of the, diaphragm.

8. The combination with a casing, of a flexible diaphragm inclosing a chamber mounted insaid casing, an air reservoir located within said casing and connected therewith, and a plug extending through the air reservoir provided with a central passage having divergent extensions extendmg to the interior of the diaphragm and convergent passages communicating between the reservoir and the interior of the diaphragm.

9.The combination with a casing, of. a flexible diaphragm inclosing a chamber mounted in said casing, an air reservoir located within .said casing and connected therewith, a plug extending through the air reservoirprovided with a central passage having divergent extensions extending to the interior of the diaphragm and convergent passages communicating between the reservoir and the interior of the diaphragm, a ball valve for the'central passage, and means for closing the convergent passages between the air reservoir and the diaphragm.

10. The combination with a casing,'of a flexible diaphragm inclosing a chamber a mounted in said casing, an air reservoir located within. said casing and connected therewith, a plug extending through the air--' reservoir provided with a central passage having divergent extensions extending to plate valve operating over the inner terminals of the convergent passages. forming 7 communication between the I'GSGIVOH" and the interior of the diaphragm aforesaid.

11. In an airy-pump, a lower cylinder, a

casing of larger circumference mounted upon said cylinder, a flexible diaphragm inclo sed in said casing, a top plate on said casing, air exhausting and intaking means for said diaphragm mounted in said top' plate, an operating plunger depending from the diaphragm within the lower cylinder, a shaft journaled in the lower portion' of the cylinder, and an eccentric on thejsha'ft bearing against the lower'end of the plunger.

I2. In an air pump, a lower cylinder, a casing oflarger circumference mounted upon said cylinder, -a flexiblev diaphragm inclosed in said casing, a top plate on said casing, air exhausting and intaking means for said diaphragm mounted in said top plate,'an operating plunger depending from the diaphragm within the lower cylinder, a shift journaled in the lower portion of the cylinder, an eccentric on the shaft bearing against the lower end of the plunger, and a spring for maintaining the plunger end in contact with the eccentric.

13; In an air pump, a lower cylinder, a

casing of larger circumference mounted shaft journaled in the lower portion of the plunger and'arranged to eng cylinder, an eccentric .on' the shaft, and; a

of the the p roller mounted in the lower riphery 0f the eccentnic.

14 In an airpump, a lower cylinlemfl-a casing of larger, circumference mounted upon said cylinder, a fleriible-diaphragm in? closed in said casing, atop plate on said. casing,'-air exhausting and intaking means for said diaphragm moimted' in said top plate, an operating plunger dependingfrom the diaphragm Within the lowerteylinder, a ehaft journaled in the lower portion of the cylinder, an eceentrie on the shaft,'a roller' mounted in the'lower end of the phmge and arrarlged to engage the periphr? of the eccentric, and a spring arranged to maintain the toilet in contact with the eccentric.

15. In an air punlp, a lower cylinder, an i A.

uppercasing, air pumping diaphragm mechanism within the casing, operating mechapism in the cylinder lncludgig a plunger tormented .to the diaphragm, and a separatiijxgpartition between the casing and cylinder having a tubular elidewayfor the plungerzc v in testimony whereof I have hereunto affixed my name in the presence of two Witmisses.

, IMAY D. FLYNN,

WRoB' KLoTz. 

